This Hillman Fasteners #1040436 deck screw features a #2 Phillips drive and a bugle head, designed for securing wood decking and other exterior timber constructions. It has a #10 diameter and a length of 4-1/2 inches, with a coarse thread design that ensures strong gripping power and draws materials tightly together. The bugle head allows for smooth countersinking into the material without splitting, creating a flush finish and distributing stress evenly across the wood surface. The screw is treated with a DURASHIELD coating, providing advanced corrosion resistance for long life in outdoor and exposed environments. This multi-layer protective coating is commonly applied to carbon steel fasteners to withstand harsh weather and resist rust, often offering properties like those found in coatings meeting 1500 hours of salt spray resistance (ASTM B-117) for enhanced durability. Typically constructed from carbon steel, this coated fastener is suitable for use with various wood types, including pressure-treated lumber. Supplied in a pack of 8 screws.